Civilization – Why would the cities go into a demand loop for luxury resources

civilization-5civilization-5-gods-and-kings

Every so often, your cities will want a luxury item and if they get it, they will enter
"We love the king day". Is it normal for multiple cities to demand the same resource? 4 of my cities wanted Ivory, so when I got it, they were happy. Then they all wanted gems. So they got gems and were happy. Then for the next few thousand years I was in perpetual king day because they were always demanding gems and ivory, which I had. Is this normal? Is this a glitch/exploit? Ivory and gems were the only thing that they were asking for.

Best Answer

They should demand luxuries that you don't currently have, giving you an incentive to acquire them.

Usually by the time that I can acquire every luxury resource, AIs have already begun shutting me out of trade deals by demanding 4 or 5 luxury items for the one I don't have.